Characteristics of steel structures

 Steel structure is built from stainless steel plate, from the application of steel structure and material characteristics can be sorted out on the characteristics of steel structure as follows.1, high strength, relatively light weight set up the mass density of the construction material, the strength of the material. Taking construction steel, wood and reinforced concrete as examples, each measures the ratio of their relative density and strength. By the three materials of the alpha value of the size of the more can be seen, just the alpha value of less. This shows that, as a stressed material, just is stronger and lighter. Therefore, the application of just in the construction of engineering projects can save materials. If the choice of reinforced concrete, general channel steel and cold-drawn thick-walled type of these three materials design and production of a span of the same, the same load-bearing plan roof frame, the reinforced concrete roof frame is large, general-purpose just roof frame is relatively light (about 1/3 ~ 1/4 of the net weight of the reinforced concrete roof frame) and the cold-drawn thick-walled channel steel roof frame is light (only 1/10 of the net weight of the reinforced concrete roof frame). According to the roof frame design program this example can be seen, the same selection of stainless steel plate, such as stainless steel plate way is not the same (general channel steel and cold-drawn thick-walled type just), the design program out of the structure of the net weight will appear quite big difference. The quality of the steel structure is light, the basic load is small, can reduce the basic engineering budget, also make the lifting and delivery of labor to reduce. Because of the high strength of stainless steel plate, steel structure is suitable for large span, towering structure, and its load-bearing super-heavy structure. But its material strength often can not get full use, this is due to the prefabricated components in the design program, according to the strength standard calculation of the required cross-section is small, and according to the smooth standard or bending stiffness standard calculation of the required prefabricated components cross-section is very large. 



2, plastic deformation, ductility is good Plastic deformation is good: the steel structure in the usual conditions is not easy to be overweight and suddenly rupture, destruction of the former has a significant deformation, very easy to be discovered. It is very easy to be discovered. Just excellent plastic deformation can reduce part of the peak stress, so that the stress all over the transition slowed down. Ductility is good: steel structure is suitable for working under driving force load, thus it is more beneficial to choose steel structure in earthquake disaster area.3, the material is proportional, more in line with the assumptions of structural mechanics measurement just because of the smelter and cold rolling the whole process of scientific research and manipulation, the internal structure of the body is more proportional, close to a variety of, in line with the idealization of ductility-plasticity. Therefore, the measurement is not judged smaller, the value is more reliable.

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